Well, Bendix clearly says bendix on them, and have cotter pins on the front - easy to recognize. IMO most likely otherwise they’re most likely ATE (Teeves), but there are girling ones out there.

Agree on replacing the brake hoses as standard maintenance on these cars if they haven’t been done in recent memory...

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Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (113k)
1991 350SD (206k)
1991 300D (228k)
1993 300SD (291k)
1993 300D 2.5T (338k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (265k)

Past Diesels:
1983 300D (228K)
1985 300D (233K)